This is a submarine that you can visit and I did so on two or three separate occasions with different people, I really loved the experience. I really enjoyed going through that mouth you have to go down to get to the inside of this submarine. It is tight, but people told us that despite the difficulties and hardships, they had a good rapport between them. The water which they use to wash with in the shower is salt water which comes directly from the sea ... do not use fresh water ... there is no such possibility. It was an incredible experience.